Cyclooctadiene bis triphenylphosphine iridium I Tetrafluoroborate

Precautions against the admission of air must be taken in this preparation an N2 or Ar atmosphere is satisfactory. A 100-mL Schlenck tube is equipped with a rubber septum and a magnetic stirrer. To an evacuated flask filled with N2 were added 700 mg of dichlorobis(j/4-l,5-cyclooctadiene)diiridium(I) (1.04 mmol), 546 mg of triphenylphosphine (2.09 mmol), and 224 mg (1.15 mmol) of silver tetrafluoroborate. Degassed (but not necessarily dry) methanol (50 mL) is added and the mixture stirred at room temperature for 

The complex is air stable in the solid state but slightly air sensitive in solution. It is soluble in CH2C12, CHC13 and Me2CO, but insoluble in HzO, C6H6, and alkanes. Other characteristics are given in the literature.410 

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